Gesamtlänge aller Episoden: 3 hours 50 minutes
A bit of reminiscing as the last Space Shuttle mission is underway.
The whole idea of the term 'dark' is that we don't know what we are talking about. So how about we stop sounding like we do?
A quick summary of what can be observed - even though we can only see a tiny bit of it.
If you are convinced that seeing is believing, astronomy may not be the science for you.
Here's an endeavour to reassure us that we are actually living in the 21st century.